Cited by 273Mitochondrial Function and PathologyGenetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and Therapy

Germline mitochondrial DNA mutations aggravate ageing and can impair brain development

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Ross, Jaime M., Stewart, James B., Hagström, Erik, Brené, Stefan, Mourier, Arnaud, Coppotelli, Giuseppe, Freyer, Christoph, Lagouge, Marie +3 more·2013·Nature

Abstract

Ageing is due to an accumulation of various types of damage, and mitochondrial dysfunction has long been considered to be important in this process. There is substantial sequence variation in mammalian mitochondrial DNA (mtDNA), and the high mutation rate is counteracted by different mechanisms that decrease maternal transmission of mutated mtDNA. Despite these protective mechanisms, it is becoming increasingly clear that low-level mtDNA heteroplasmy is quite common and often inherited in humans. We designed a series of mouse mutants to investigate the extent to which inherited mtDNA mutations can contribute to ageing. Here we report that maternally transmitted mtDNA mutations can induce mild ageing phenotypes in mice with a wild-type nuclear genome. Furthermore, maternally transmitted mtDNA mutations lead to anticipation of reduced fertility in mice that are heterozygous for the mtDNA mutator allele (PolgA(wt/mut)) and aggravate premature ageing phenotypes in mtDNA mutator mice (PolgA(mut/mut)). Unexpectedly, a combination of maternally transmitted and somatic mtDNA mutations also leads to stochastic brain malformations. Our findings show that a pre-existing mutation load will not only allow somatic mutagenesis to create a critically high total mtDNA mutation load sooner but will also increase clonal expansion of mtDNA mutations to enhance the normally occurring mosaic respiratory chain deficiency in ageing tissues. Our findings suggest that maternally transmitted mtDNA mutations may have a similar role in aggravating aspects of normal human ageing.

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  • Inheritance determines an individual's baseline mitochondrial function and durability, and maternal inheritance plays a greater role than paternal inheritance.

    “These and other data in this section argue inheritance determines an individual's baseline mitochondrial function and durability, and maternal inheritance plays a greater role than paternal inheritance [30].”

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Authors
Ross, J. M., Stewart, J. B., Hagström, E., Brené, S., Mourier, A., Coppotelli, G., Freyer, C., Lagouge, M., Hoffer, B. J., Olson, L., & Larsson, N.-G.
Affiliations
  • Karolinska Institutet (SE)
  • Max Planck Institute for Biology of Ageing (DE)
  • University Hospitals of Cleveland (US)
Corresponding author
  • Olson, Lars
  • Larsson, Nils-Göran
Venue
Nature
Published
2013-08-21
Volume
501
Issue
7467
Pages
412-415
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2088995367
Cited by
273
References
33
Citations by year
2026: 11 · 2025: 18 · 2024: 19 · 2023: 12 · 2022: 17 · 2021: 12 · 2020: 27 · 2019: 22 · 2018: 27 · 2017: 18 · 2016: 23 · 2015: 21 · 2014: 32 · 2013: 13
FWCI
13.30
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • National Institute on Aging (AG04418, P01AG004418)
  • National Institute of Neurological Disorders and Stroke (R01NS070825, NS 070825)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
aging, brain malformations, somatic mtDNA mutations, mitochondrial heteroplasmy, clonal expansion, respiratory chain deficiency, fertility, mouse mutants, mitochondrial dysfunction, brain development, somatic mosaicism
MeSH terms
Aging, Alleles, Animals, Brain, Cell Nucleus, DNA, Mitochondrial, Extrachromosomal Inheritance, Female, Heterozygote, Litter Size, Male, Mice, Inbred C57BL, Mitochondria, Mutation, Phenotype, Reproduction, Stochastic Processes, Mutagenesis, Genome, Mice

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